Yes ChoclateBetta you are right the lower dose of the aq salt is 1teaspoon ,but it can be used up to 3tsp/gall. So since looks like he is better but still has the parasites i assume by description, i think it better to increase the dose 2-3tsp/gall. Usually if you would treat parasites with aquarium salt only without medications you need to use 2-3tsp/gall.